def get(self):
tid = thread.get_ident()
txn = self._txns.get(tid)
if txn is None:
synchs = self._synchs.get(tid)
if synchs is None:
synchs = self._synchs[tid] = WeakSet()
txn = self._txns[tid] = Transaction(synchs, self)
return txn
def get(self):
tid = thread.get_ident()
txn = self._txns.get(tid)
if txn is None:
synchs = self._synchs.get(tid)
if synchs is None:
from ZODB.utils import WeakSet
synchs = self._synchs[tid] = WeakSet()
if self._global_syncs:
[synchs.add(gs) for gs in self._global_syncs]
txn = self._txns[tid] = Transaction(synchs, self)
return txn
def begin(self):
tid = thread.get_ident()
txn = self._txns.get(tid)
if txn is not None:
txn.abort()
synchs = self._synchs.get(tid)
if synchs is None:
synchs = self._synchs[tid] = WeakSet()
txn = self._txns[tid] = Transaction(synchs, self)
_new_transaction(txn, synchs)
return txn
def begin(self):
tid = thread.get_ident()
txn = self._txns.get(tid)
if txn is not None:
txn.abort()
synchs = self._synchs.get(tid)
if synchs is None:
from ZODB.utils import WeakSet
synchs = self._synchs[tid] = WeakSet()
if self._global_syncs:
[synchs.add(gs) for gs in self._global_syncs]
txn = self._txns[tid] = Transaction(synchs, self)
_new_transaction(txn, synchs)
return txn
def __init__(self, pool_size):
# The largest # of connections we expect to see alive simultaneously.
self.pool_size = pool_size
# A weak set of all connections we've seen. A connection vanishes
# from this set if pop() hands it out, it's not reregistered via
# repush(), and it becomes unreachable.
self.all = WeakSet()
# A stack of connections available to hand out. This is a subset
# of self.all. push() and repush() add to this, and may remove
# the oldest available connections if the pool is too large.
# pop() pops this stack. There are never more than pool_size entries
# in this stack.
# In Python 2.4, a collections.deque would make more sense than
# a list (we push only "on the right", but may pop from both ends).
self.available = []
def __init__(self, synchronizers=None, manager=None):
self.status = Status.ACTIVE
# List of resource managers, e.g. MultiObjectResourceAdapters.
self._resources = []
# Weak set of synchronizer objects to call.
if synchronizers is None:
from ZODB.utils import WeakSet
synchronizers = WeakSet()
self._synchronizers = synchronizers
self._manager = manager
# _adapters: Connection/_p_jar -> MultiObjectResourceAdapter[Sub]
self._adapters = {}
self._voted = {} # id(Connection) -> boolean, True if voted
# _voted and other dictionaries use the id() of the resource
# manager as a key, because we can't guess whether the actual
# resource managers will be safe to use as dict keys.
# The user, description, and _extension attributes are accessed
# directly by storages, leading underscore notwithstanding.
self._extension = {}
self.log = logging.getLogger("txn.%d" % thread.get_ident())
self.log.debug("new transaction")
# If a commit fails, the traceback is saved in _failure_traceback.
# If another attempt is made to commit, TransactionFailedError is
# raised, incorporating this traceback.
self._failure_traceback = None
# List of (hook, args, kws) tuples added by addBeforeCommitHook().
self._before_commit = []
# List of (hook, args, kws) tuples added by addAfterCommitHook().
self._after_commit = []
def __init__(self):
self._txn = None
self._synchs = WeakSet()
def registerSynch(self, synch):
tid = thread.get_ident()
ws = self._synchs.get(tid)
if ws is None:
ws = self._synchs[tid] = WeakSet()
ws.add(synch)
